Question

ve 2 goc ke bu xOy, yOx'. Biet goc xOy = 100 do. Goi Ot la tia phan giac cua goc xOy, Ot' la tia phan giac cua goc x'Oy. Tinh goc x'Ot, goc xOt', goc tOt'

Answer 1

\(\widehat{x'Oy}=180^0-100^0=80^0\)

\(\widehat{xOt}=\dfrac{100^0}{2}=50^0\)

\(\widehat{x'Ot}=180^0-50^0=130^0\)

\(\widehat{x'Ot'}=\dfrac{80^0}{2}=40^0\)

nên \(\widehat{xOt'}=140^0\)

\(\widehat{tOt'}=\dfrac{180^0}{2}=90^0\)